From 1937 to 1945, the most difficult period of the war, the party underground workers Qin Chuan in the organization's secret plan, the success of the Japanese ambassador to Shanghai in. Prior to this, Qinchuan had long latent in the Chinese nationalist revival society, successful access to information, to eradicate the hidden within our party organization of the Kuomintang spy. Qinchuan "with" Mei organ news closely watched by the KMT, and Japanese underground party organization. For the smooth implementation of the latent plan, access, military intelligence, Qinchuan, relying on the wisdom and courage, step-by-step, saved the day, seize the opportunity to against the enemy, to defend the organization. With our party and trade personnel xialan as Qinchuan lover, nurses themselves the identity of the cover of Qinchuan, Joseph acquainted but unable to defend, tore heart crack lung of emotion turned into a cavity patriotic blood. At the same time, patriotic inspector Shen Ruohan and juntong female spy Ye Linlin involved in emotional entanglements, in order to the righteous cause of the nation have sacrificed their lives. Finally, xialan and Qinchuan successfully completed the tasks assigned by the party, xialan but heroic sacrifice for the cause of revolution.